On Fri, Sep 2, 2016 at 10:10 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:

> Also, before getting too high and mighty with users who expect
> "select * from table" to produce rows in a predictable order,
> you should reflect on the number of places in our regression
> tests that assume exactly that ...

An assumption that not infrequently breaks.  AFAIK, we generally
adjust the tests when that happens, rather than considering it a
bug in the code.  I never thought we did that because there was a
secret, undocumented guarantee of order, but to allow different
code paths to be tested than we would test if we always specified
an order.

--
Kevin Grittner
EDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company


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